Substance profile
Cyclohexanol
Cyclohexanol is colorless needles or viscous liquid with a camphor-like odor.
01 · Identification
What Cyclohexanol is
Cyclohexanol is colorless needles or viscous liquid with a camphor-like odor. Its molecular formula is C6H12O and its molecular weight is 100.16 g/mol. It boils at 162 °C, melts at 25.9 °C.
Under the GHS it carries the signal word Warning. It is classed as flammable agents - 2nd degree.
02 · Identifiers
Cyclohexanol identifiers and molecular data
Cyclohexanol CAS number and EC number
Cyclohexanol molecular formula and molecular weight
03 · GHS classification
Cyclohexanol hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Cyclohexanol pictograms and signal word
Cyclohexanol hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 4 | H332 | GHS07 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 2 | H315 | GHS07 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 | H335 | GHS07 |
Cyclohexanol hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H332 | Harmful if inhaled. |
| H302 | Harmful if swallowed. |
| H335 | May cause respiratory irritation. |
| H315 | Causes skin irritation. |
This page lists only the codes assigned to Cyclohexanol. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Cyclohexanol
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Cyclohexanol issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Cyclohexanol precautionary statements
CLP Annex VI assigns 13 precautionary statements to Cyclohexanol. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Cyclohexanol name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | циклохексанол |
| Spanish español | Ciclohexanol |
| Czech čeština | cyklohexanol |
| Danish dansk | cyclohexanol |
| German Deutsch | Cyclohexanol |
| Estonian eesti | tsükloheksanool |
| Greek ελληνικά | κυκλοεξανόλη |
| English English | cyclohexanol |
| French français | cyclohexanol |
| Croatian hrvatski | cikloheksanol |
| Italian italiano | cicloesanolo |
| Latvian latviešu | cikloheksanols |
| Lithuanian lietuvių | cikloheksanolis |
| Hungarian magyar | ciklohexanol |
| Maltese Malti | ċikloessanol |
| Dutch Nederlands | cyclohexanol |
| Polish polski | cykloheksanol |
| Portuguese português | ciclo-hexanol |
| Romanian română | ciclohexanol |
| Slovak slovenčina | cyklohexanol |
| Slovenian slovenščina | cikloheksanol |
| Finnish suomi | sykloheksanoli |
| Swedish svenska | cyklohexanol |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Cyclohexanol GHS label elements
Everything CLP Annex VI fixes for Cyclohexanol, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Warning
Cyclohexanol
- Harmful if inhaled.
- Harmful if swallowed.
- May cause respiratory irritation.
- Causes skin irritation.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Wash … thoroughly after handling.
- Do not eat, drink or smoke when using this product.
- Use only outdoors or in a well-ventilated area.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- IF ON SKIN:
- IF INHALED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Get medical advice/attention.
- Rinse mouth.
- If skin irritation occurs:
- Wash with plenty of water/…
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Cyclohexanol in the GHS label constructor →
07 · Health hazards
Cyclohexanol health hazards and exposure limits
Cyclohexanol hazard summary
Liquid or solid form causes first degree burns on short exposure; [CHRIS] Skin absorption and narcosis seen in acute animal studies; [ACGIH] A skin, eye, and respiratory tract irritant; Inhalation of high concentrations may cause CNS effects; [ICSC] Causes liver and kidney injury in high-dose animal studies; [HSDB]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Cyclohexanol occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 50.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| PEL | 50 ppm (200 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| PEL | TWA 50 ppm (200 mg/m3) See Appendix G | The National Institute for Occupational Safety and Health (NIOSH) |
| REL | 50 ppm (200 mg/m³) | Occupational Safety and Health Administration (OSHA) |
| REL | TWA 50 ppm (200 mg/m3) [skin] | The National Institute for Occupational Safety and Health (NIOSH) |
| IDLH | 400 ppm (NIOSH, 2024) | CAMEO Chemicals |
| IDLH | 400.0 [ppm] | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
| IDLH | Excerpts from Documentation for IDLHs: Human data: The estimated acceptable concentration for 8 hours was reported in volunteers to be less than 100 ppm [Nelson et al. 1943]. | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Physical and chemical properties
Cyclohexanol properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
Cyclohexanol boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 161.84 °C (323.3 °F) | HSDB | |
| 161.11 °C (322 °F) | NIOSH | ||
| 161.11 °C (322 °F) | at 760 mmHg | CAMEO |
Cyclohexanol melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 25.93 °C (78.7 °F) | HSDB | |
| 25 °C (77 °F) | NIOSH | ||
| 22.78 °C (73 °F) | CAMEO |
Cyclohexanol density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.96 g/cm³ | NIOSH | |
| 0.9624 g/cm³ | at 20 °C | HSDB | |
| 0.947 g/cm³ | at 20 °C | CAMEO |
Cyclohexanol solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Soluble in ethanol, ethyl ether, acetone; miscible with benzene; slightly soluble in chloroform | HSDB | |
| 4% | NIOSH | ||
| 3.6% (wt/wt) in water at 20 °C; miscible with ethyl acetate, linseed oil, petroleum solvents. | at 20 °C | HSDB |
Cyclohexanol vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 1 mmHg | NIOSH | |
| 1.1251 mmHg | at 20 °C | HSDB | |
| 0.657 mmHg | at 25 °C | HSDB |
Cyclohexanol flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | 62.8 °C (145 °F) | closed cup | HSDB |
| 67.78 °C (154 °F) | NIOSH |
Cyclohexanol autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 300 °C (572 °F) | HSDB |
Cyclohexanol lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 2.7 % by volume | HSDB | |
| 2.4 % by volume | ICSC | ||
| Above 68 °C explosive vapor/air mixtures may be formed. | HSDB |
Cyclohexanol upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 12 % by volume | HSDB |
Cyclohexanol vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 3.5 (air = 1) | HSDB |
Cyclohexanol odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | 0.07 ppm | HSDB | |
| Odor Threshold Low: 0.05 [ppm] | Haz-Map | ||
| Odor Threshold High: 0.15 [ppm] | Haz-Map |
Cyclohexanol critical temperature and pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Critical temperature and pressure | 376.95 °C (710.5 °F) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
Cyclohexanol fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Cyclohexanol fire potential
Flammable when exposed to heat or flame.
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
Cyclohexanol storage and handling
Cyclohexanol peroxide formation
B*: Compounds that form peroxides on concentration (distillation/evaporation)
Source: Lab and Research Safety, University of Minnesota
Cyclohexanol safe storage
Separated from strong oxidants. Dry.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
Cyclohexanol storage conditions
Cyclohexanol must be stored to avoid contact with strong oxidizers (such as chlorine, bromine, and fluorine), since violent reactions occur. Metal containers involving the transfer of this chemical should be grounded and bonded. Where possible, automatically pump liquid from drums or other storage containers to process containers. Drums must be equipped with self-closing valves, pressure vacuum bungs, and flame arresters. Use only non-sparking tools and equipment, especially when opening and closing containers of this chemical. Sources of ignition, such as smoking and open flames, are prohibited where this chemical is used, handled, or stored in a manner that could created a potential fire or explosion hazard. Wherever this chemical is used, handled, manufactured, or stored, use explosion-proof electrical equipment and fittings.
Source: Hazardous Substances Data Bank (HSDB)
Cyclohexanol incompatible materials
Contact with strong oxidizers causes a fire and explosion hazard. Attacks some plastics.
Source: Hazardous Substances Data Bank (HSDB)
Cyclohexanol reactivity
CYCLOHEXANOL is an alcohol. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides. Violent reaction with nitric acid. Incompatible with strong oxidizers (chromium trioxide, nitric acid, etc.). (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Cyclohexanol in the storage compatibility matrix →
11 · Questions
Cyclohexanol — frequently asked questions
What is the CAS number of Cyclohexanol?
The CAS number of Cyclohexanol is 108-93-0. Its EC number is 203-630-6.
What is the chemical formula of Cyclohexanol?
The molecular formula of Cyclohexanol is C6H12O and its molecular weight is 100.16 g/mol.
What does a Cyclohexanol label have to show?
Under CLP Annex VI the label for Cyclohexanol carries the pictogram Exclamation mark and the signal word is Warning.
Is Cyclohexanol flammable?
CLP Annex VI assigns Cyclohexanol no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it. The flash point reported for it is 62.8 °C (145 °F), closed cup (HSDB).
Is Cyclohexanol a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Cyclohexanol. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the exposure limit for Cyclohexanol?
The US occupational exposure limit reported for Cyclohexanol is 50.0 [ppm] (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the boiling point of Cyclohexanol?
The boiling point reported for Cyclohexanol is 161.84 °C (323.3 °F) (HSDB).
What is the melting point of Cyclohexanol?
The melting point reported for Cyclohexanol is 25.93 °C (78.7 °F) (HSDB).
How should Cyclohexanol be stored?
Cyclohexanol must be stored to avoid contact with strong oxidizers (such as chlorine, bromine, and fluorine), since violent reactions occur. Metal containers involving the transfer of this chemical should be grounded and bonded. Where possible, automatically pump liquid from drums or other storage containers to process containers. Drums must be equipped with self-closing valves, pressure vacuum bungs, and flame arresters. Use only non-sparking tools and equipment, especially when opening and closing containers of this chemical. Sources of ignition, such as smoking and open flames, are prohibited where this chemical is used, handled, or stored in a manner that could created a potential fire or explosion hazard. Wherever this chemical is used, handled, manufactured, or stored, use explosion-proof electrical equipment and fittings. (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Cyclohexanol
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